Woodbridge Antiques has dated this piece to the 1920s.

A lovely ring in the true art deco style.
The inside of the shank is marked '18ct & Plat'.
Condition: In lovely condition, there is some slight wear to the opal commensurate with the age of the ring, which is only noticeable when viewed through a magnifying glass

Measurements:
Ring Size K. Width across setting shoulder to shoulder: 1.1 cm
Depth of setting: 5.5 mm Width of shank at base: 1.59 mm
Weight: 1.7 grams
Weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1920s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page